Midrash su Geremia 36:6

(Bamidbar 12:1) "And Miriam and Aaron spoke (vatedaber) against Moses": "dibbur" in all places connotes "harsh" speech, as in (Bereshit 42:30) "The man, the lord of the land, spoke ("dibber") roughly to us," (Bamidbar 21:5) "and the people spoke ("vayedaber") against G-d and against Moses." And "amirah" in all places connotes imploration as in (Bereshit 19:7) "And he said (vayomer): Do not, I pray you, my brothers, do ill," (Bamidbar 12:6) "And He said (vayomer): Hear, I pray you, My words." "And Miriam and Aaron spoke against Moses": We are hereby apprised that both spoke against him, but that Miriam spoke first. This was not her practice, but the occasion demanded it. Similarly (Jeremiah 36;6) "And you (Baruch) shall go and read from the scroll, on which you have written from my (Jeremiah's) mouth, the word of the L-rd in the ears of the people" — not that it was Baruch's practice to speak before Jeremiah, but the occasion demanded it. "and Miriam and Aaron spoke against Moses": How did Miriam know that Moses had ceased from marital relations (with his wife Tzipporah)? Seeing that Tzipporah did not adorn herself as other (married) women did, she asked her for the cause and was told: "Your brother is not 'particular' about this thing" (intercourse, [being constantly "on call" for the word of G-d]). Thus Miriam learned of the matter. She apprised Aaron of it and they both spoke of it (as being a troublesome precedent for others.) Now does this not follow a fortiori, viz.: If Miriam, whose intent was not to berate her brother, but to praise him, and not to diminish propagation (in Israel), but to increase it, and who spoke thus privately — If she was thus punished, then one who intends to speak against his brother, in defamation and not in praise, and to diminish propagation and not to increase it, and in public — how much more so (is he to be punished!) Similarly, a fortiori from the instance of Uzziah (viz. II Chronicles 16-19) If King Uzziah, whose intent (in offering the incense) was not self-aggrandizement or personal honor but the glory of his Master, was thus punished, how much more so one who intends the opposite! (Bamidbar, Ibid.) "… Because of the Cushite woman": Scripture hereby apprises us that whoever beheld her attested to her beauty. And thus is it written (Bereshit 11:29) "… the father of Milkah and the father of Yiskah": Yiskah is Sarah: Why was she called "Yiskah"? For all gazed upon ("sochim") her beauty, as it is written (Ibid. 12:15) "And Pharaoh's officers saw her and praised her to Pharaoh." R. Eliezer the son of R. Yossi Haglili said: "Tzipporah" (Moses' wife) — Why was she called "Tzipporah"? "Tzfu ur'uh" ("Look and see") how beautiful this woman is! "the Cushite (Ethiopian) woman": Now was she an Ethiopian? Wasn't she a Midianite, viz. (Shemot 2:16) "And the priest of Midian had seven daughters, etc." What is the intent of "Cushite"? Just as a Cushite is exceptional in his skin, so Tzipporah was exceptional in her beauty — more so than all the women. Similarly, (Psalms 7:1) "A Shiggayon of David, which he sang to the L-rd concerning Cush (Saul), a Benjaminite." Now was he a Cushite? (The intent is:) Just as a Cushite is exceptional in his skin, so Saul was exceptional in his appearance, as it is written of him (I Samuel 9:2) "… from his shoulder and upwards, taller than all of the people." Similarly, (Amos 9:7) "Are you not like Cushites to Me, O children of Israel?" Now were they Cushites? (The intent is:) Just as a Chushite is exceptional in his skin, so, is an Israelite exceptional in mitzvoth. Similarly, (Jeremiah 32:7) "And Eved-melech the Cushite heard": Now was he a Cushite? Was he not Baruch? But, just as a Cushite is exceptional in his skin, so, was Baruch ben Neriah exceptional in his deeds, more so than any of the others in the king's palace. (Bamidbar, Ibid.) "for he had taken a Cushite woman": Why is this written? Is it not written (immediately before) "about the Cushite woman that he had taken"? — There are those who are beautiful in appearance, but not in deed; in deed, but not in appearance, viz. (Proverbs 11:22) "Like a golden ring in the snout of a pig is a beautiful woman lacking in sense. Tzipporah was beautiful in both — wherefore it is written "about the Cushite woman that he had taken, for he had taken a Cushite woman."